Contexts for Engagement and Motivation in Reading by John T. Guthrie, available at http://www.readingonline.org/articles/handbook/guthrie/

Here's my summary:

Readers are motivated to read more when they're engaged with books. What does an engaged reader look like?

*motivated to read for personal goals
*strategic in using comprehension strategies
*knowledgeable in constructing new meanings
*socially interactive

How can we create a classroom/library environment that nurtures motivation?

*identify a knwoledge goal and announce it
*provide a real-world experience related to the goal
*make trade books and other resources available
*give students some choice about topics and texts
*teach cognitive strategies to help students succeed
*assure social collaboration for learning
*align evaluation of student work with the context

Consider participating in a Children's Choice Book Award, which can incorporate many of these factors.

Toby